List<Map>去重并合并数量

    List<Map> dataList = bigScreenService.queryEventOrginCodeNum();
        List<Map<String, Object>> resultList = new ArrayList<>();
        if (dataList != null && dataList.size() > 0) {
            for (int k = 0; k < dataList.size(); k++) {
                Map orginMap = dataList.get(k);
                String deptName = "";//部门名称判断
                if (orginMap.get("deptName") != null && !"".equals(orginMap.get("deptName"))) {
                    deptName = orginMap.get("deptName").toString().replaceAll("&gt;", ">");
                    String[] deptArr = deptName.split(">");
                    deptName = deptArr[deptArr.length - 1];
                }

                String deptId = (String) orginMap.get("deptId");//部门ID判断
                if (deptId.indexOf(">") != -1) {
                    String[] deptIdArr = deptId.split(">");
                    deptId = deptIdArr[deptIdArr.length - 1];
                }
                orginMap.put("deptName", deptName);
                orginMap.put("deptId", deptId);


                //0为新增数据，1为拼接,对部门ID链最后一个节点相同的部门做相加
                String deptChainId = (String) dataList.get(k).get("deptId");
                int flag = 0;
                for (int j = 0; j < resultList.size(); j++) {
                    String newDeptChainId = String.valueOf(resultList.get(j).get("deptId"));
                    if (deptChainId.equals(newDeptChainId)) {
                        Number sameNum = (Number) dataList.get(k).get("originCode");
                        Number sameNum2 = (Number) resultList.get(j).get("originCode");
                        int originCodeNum = sameNum.intValue() + sameNum2.intValue();
                        resultList.get(j).put("originCode", originCodeNum);
                        flag = 1;
                        continue;
                    }

                }
                if (flag == 0) {
                    resultList.add(dataList.get(k));
                }
            }
        }